impeachment evidenceglossary / impeachment evidence Evidence used to undermine a witness’s credibility. Fed. R. Evid. 607–610. [Cases: Witnesses 311–409. C.J.S. Witnesses §§ 559–775.] 词条贡献者 资深译员Chris,毕业于一所培养高级翻译以及跨文化事务专家的精英大学,专注翻译各种与卫星及航天技术诉讼有关的法律文件。